import axios from 'axios'
import { Notification, MessageBox, Message } from 'element-ui'
import store from '@/store'
import { getToken } from '@/utils/auth'
import errorCode from '@/utils/errorCode'
import { Loading } from 'element-ui';
import { generateRandomString, generateSignature } from '@/utils';

// 多语言过期提示
let expiredTip = ''
let reLogin = ''
let systemTip = ''
let cancel = ''
expiredTip = '登录状态已过期，您可以继续留在该页面，或者重新登录'
reLogin = '重新登录'
systemTip = '系统提示'
cancel = '取消'
// 创建axios实例
const service = axios.create({
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  baseURL: process.env.VUE_APP_FILE_API,
  // 超时
  timeout: 1000 * 600
})
var loadingInstan = null
// request拦截器
service.interceptors.request.use(config => {
  // 添加Loaidng
  loadingInstan = Loading.service({
    fullscreen: true,
    lock: true,
    text: 'Loading',
    spinner: 'el-icon-loading',
    background: 'rgba(0, 0, 0, 0.7)'
  });
  // 是否需要设置 token
  const isToken = (config.headers || {}).isToken === false
  if (getToken() && !isToken) {
    config.headers['Token'] = 'Bearer ' + getToken() // 让每个请求携带自定义token 请根据实际情况自行修改
    config.headers['front-request-id'] = 'property-1.0.0-' + generateRandomString(8) + '-' + new Date().getTime()
    config.headers['Authorization'] = localStorage.getItem('authorization')
    config.headers['ics-authorization'] = localStorage.getItem('icsAuthorization')
    config.headers['Access-Control-Allow-Headers'] = '*'
  }
  // get请求映射params参数
  if (config.method === 'get' && config.params) {
    let url = config.url + '?';
    for (const propName of Object.keys(config.params)) {
      const value = config.params[propName];
      var part = encodeURIComponent(propName) + "=";
      if (value !== null && typeof (value) !== "undefined") {
        if (typeof value === 'object') {
          for (const key of Object.keys(value)) {
            let params = propName + '[' + key + ']';
            var subPart = encodeURIComponent(params) + "=";
            url += subPart + encodeURIComponent(value[key]) + "&";
          }
        } else {
          url += part + encodeURIComponent(value) + "&";
        }
      }
    }
    url = url.slice(0, -1);
    config.params = {};
    config.url = url;
  }
  return config
}, error => {
  console.log(error)
  Promise.reject(error)
})

// 响应拦截器
service.interceptors.response.use(res => {
  // 去除Loading
  loadingInstan.close()
  // 未设置状态码则默认成功状态
  const code = res.data.code || 200;
  // 获取错误信息
  const msg = errorCode[code] || res.data.msg || errorCode['default']

  // 文件下载
  if (res.config.responseType == 'blob'){
    return res.data;
  }

  if (code === 401) {
    MessageBox.confirm(expiredTip, systemTip, {
      confirmButtonText: reLogin,
      cancelButtonText: cancel,
      type: 'warning'
    }
    ).then(() => {
      store.dispatch('LogOut').then(() => {
        location.href = process.env.VUE_APP_PROJECT_ROOT;
      })
    })
  } else if (code === 500) {
    Message({
      message: msg,
      type: 'error'
    })
    return Promise.reject(new Error(msg))
  } else if (code !== 200) {
    Notification.error({
      title: msg
    })
    return Promise.reject('error')
  } else {
    if (/\/logout$/.test(res.request.responseURL)) {
      return res.data
    }
    if (res.data.data) {
      return res.data.data
    } else {
      Message({
        message: res.data.msg,
        type: 'error'
      })
      return Promise.reject(new Error(res.data.data.msg))
    }
  }
},
  error => {
    // 去除Loading
    loadingInstan.close()

    console.log('err' + error)
    let { message } = error;
    if (message == "Network Error") {
      message = "后端接口连接异常";
    }
    else if (message.includes("timeout")) {
      message = "系统接口请求超时";
    }
    else if (message.includes("Request failed with status code")) {
      message = "系统接口" + message.substr(message.length - 3) + "异常";
    }
    Message({
      message: message,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)

export default service
